A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5930-01-630-8070
NSN 5996-01-548-3788
NSN 6610-01-222-0582
NSN 6105-01-252-8847
NSN 6645-01-206-4888
NSN 7035-00-946-2642
NSN 6610-00-421-9853
NSN 6645-01-023-0005
NSN 5975-01-481-9172
NSN 6145-01-094-6822
NSN 6220-01-151-0835
NSN 6240-01-145-4916